Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and links to their rpeorts go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 2322
interventional 1805
Observational 475
Registry 42

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 979
Drug|placebo 263
Biological 256
Behavioral 54
Other 53
Biological|Drug 42
Biological|Drug|placebo 23
Device 18
Procedure 15
Biological|placebo 13
Dietary Supplement 12
Drug|Other 10
Diagnostic Test 8
Device|Drug 7
Behavioral|Other 6
Biological|Other 5
Biological|Procedure 4
Dietary Supplement|placebo 4
Behavioral|Biological 3
Behavioral|Drug 3
Device|Other 3
Dietary Supplement|Drug 3
Other|Procedure 3
Biological|Drug|Other 2
Drug|Procedure 2
Genetic 2
Behavioral|Diagnostic Test 1
Behavioral|placebo 1
Biological|Drug|Procedure 1
Biological|Other|placebo 1
Diagnostic Test|Drug 1
Dietary Supplement|Drug|Procedure 1
Dietary Supplement|Other 1
Drug|Genetic 1
Drug|Other|placebo 1
Drug|Other|Procedure 1
Genetic|Other 1
placebo 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 369
NA 259
China 128
Korea, Republic of 55
United States|Puerto Rico 53
France 44
Taiwan 44
Japan 41
Canada 34
Germany 31
Belgium 30
India 29
Spain 28
Egypt 27
United Kingdom 22
Netherlands 19
Thailand 19
Australia 17
Iran, Islamic Republic of 14
Russian Federation 14
Brazil 13
Italy 13
United States|Canada 12
Hong Kong 10
New Zealand 10
Austria 9
Philippines 8
Switzerland 8
Turkey 7
Vietnam 7
Israel 6
Mexico 6
Sweden 6
Australia|New Zealand 5
Belgium|France 5
Denmark 5
Pakistan 5
Singapore 5
South Africa 5
Belgium|Czech Republic|Hungary 4
China|Korea, Republic of 4
Norway 4
Poland 4
United States|New Zealand 4
Belgium|Germany 3
Colombia|Costa Rica 3
Czech Republic 3
Indonesia 3
Moldova, Republic of 3
Puerto Rico 3
United States|France|Germany|Spain 3
Bangladesh 2
Belgium|Czechia 2
Belgium|Germany|United Kingdom 2
Belgium|Netherlands 2
Bulgaria 2
China|Hong Kong 2
Cuba 2
Czech Republic|Malaysia|Spain 2
Hong Kong|Korea, Republic of 2
Kazakhstan 2
Philippines|Thailand 2
Rwanda 2
Saudi Arabia 2
United States|Australia|Canada|France|Germany|New Zealand|Puerto Rico|United Kingdom 2
United States|Australia|Canada|Korea, Republic of|New Zealand 2
United States|Canada|Hong Kong|Italy|Korea, Republic of|New Zealand|Taiwan|United Kingdom 2
United States|Canada|Hong Kong|New Zealand|United Kingdom 2
United States|France 2
United States|France|Puerto Rico 2
United States|Germany 2
United States|New Zealand|Singapore|Taiwan 2
Algeria|Australia|Austria|Belgium|Bulgaria|Canada|Denmark|Finland|France|Germany|Greece|Ireland|Israel|Italy|Mexico|Netherlands|Norway|Poland|Portugal|Romania|Russian Federation|Saudi Arabia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Argentina 1
Argentina|Brazil|Germany|Thailand 1
Argentina|United States|Australia|Belgium|Canada|France|Germany|Hong Kong|Hungary|Italy|Korea, Republic of|Mexico|Poland|Puerto Rico|Romania|Russian Federation|Spain|Taiwan|Thailand|United Kingdom|Vietnam 1
Australia|Argentina|Canada|Mexico|New Zealand|Thailand 1
Australia|Belgium 1
Australia|Belgium|Canada|Germany|Norway|Switzerland|United Kingdom 1
Australia|Belgium|Spain 1
Australia|Belgium|Ukraine 1
Australia|Brazil|France|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
Australia|Bulgaria|China|Hong Kong|Korea, Republic of|New Zealand|Singapore|Taiwan|Thailand 1
Australia|Canada|Czech Republic|France|Germany|Israel|Poland|Romania 1
Australia|Canada|Czechia|Finland|Italy|Spain 1
Australia|Canada|France|Germany|Greece|India|Italy|Poland|Spain|Taiwan|Thailand|United Kingdom 1
Australia|Canada|Israel|New Zealand|Spain|United Kingdom 1
Australia|Czech Republic|Germany|Italy|Netherlands|Switzerland|United Kingdom 1
Australia|France 1
Australia|France|Germany|Italy|Spain|United Kingdom 1
Australia|Germany|Poland|Romania|Spain|Taiwan 1
Australia|Hong Kong|Korea, Republic of|New Zealand|Singapore|Taiwan|Thailand 1
Australia|Hong Kong|Korea, Republic of|New Zealand|Thailand 1
Australia|Hong Kong|Korea, Republic of|Taiwan|United Kingdom 1
Australia|Hong Kong|New Zealand 1
Australia|New Zealand|United Kingdom 1
Australia|Thailand 1
Austria|Belgium|Denmark|Iceland 1
Austria|Belgium|France|Germany|Japan|Portugal|Romania|Russian Federation|Spain|Switzerland|United Kingdom 1
Austria|Belgium|France|Germany|Netherlands|Spain 1
Austria|Belgium|France|Germany|Saudi Arabia|Spain|United Kingdom 1
Austria|Belgium|France|Germany|Spain|United Kingdom 1
Austria|Brazil|France|Greece|Indonesia|Italy|Turkey|United Arab Emirates 1
Austria|France|Germany|United Kingdom 1
Austria|Germany|Hungary|Poland|Romania|Spain 1
Belarus|India|Russian Federation|Thailand 1
Belgium|Bulgaria|France|Georgia|Germany|Malaysia|Moldova, Republic of|Romania|Spain|Taiwan 1
Belgium|Canada 1
Belgium|Canada|Germany|Poland|Singapore|Spain 1
Belgium|Canada|Sweden 1
Belgium|Czech Republic 1
Belgium|Czechia|Germany 1
Belgium|Denmark 1
Belgium|France|Germany|Hungary|Spain|United Kingdom 1
Belgium|France|Germany|Italy|Poland|Romania|Spain 1
Belgium|France|Germany|Italy|Poland|Spain|United Kingdom 1
Belgium|France|Germany|Netherlands|Poland|United Kingdom 1
Belgium|France|Germany|United Kingdom 1
Belgium|Germany|Hungary|Ireland|Luxembourg|Portugal|Russian Federation|United Kingdom 1
Belgium|Germany|Philippines|United Kingdom 1
Belgium|Germany|Poland|United Kingdom 1
Belgium|Germany|Thailand 1
Belgium|Mauritius|Moldova, Republic of 1
Belgium|Moldova, Republic of 1
Brazil|United States|Australia|Canada|China|France|Germany|Israel|Korea, Republic of|New Zealand|Poland|Puerto Rico|Singapore|Switzerland|Taiwan|Thailand|United Kingdom 1
Bulgaria|China|Hong Kong|Korea, Republic of|New Zealand|Poland|Taiwan|United Kingdom 1
Bulgaria|Former Yugoslavia 1
Bulgaria|Hong Kong|Italy|Netherlands|New Zealand|Taiwan|Thailand|United Kingdom 1
Bulgaria|Israel|Romania 1
Bulgaria|Romania 1
Burkina Faso|Ghana 1
Côte D’Ivoire 1
Cambodia 1
Cameroon|Côte D’Ivoire|Senegal 1
Canada|China|France|Hong Kong|Korea, Republic of|New Zealand|Spain|Taiwan|Thailand|United Kingdom 1
Canada|France|Germany 1
Canada|Germany 1
Canada|Hong Kong|Korea, Republic of|Taiwan 1
Canada|Korea, Republic of|Taiwan 1
Canada|Moldova, Republic of|Ukraine 1
Canada|Netherlands 1
Canada|United Kingdom 1
Canada|United States|Argentina|Australia|Austria|France|Germany|Ireland|Israel|Italy|Korea, Republic of|Netherlands|New Zealand|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
Canada|United States|Australia|Austria|Belgium|France|Germany|New Zealand|Poland|Puerto Rico|Russian Federation|Spain|United Kingdom 1
Chile 1
China|Hong Kong|Japan|Korea, Republic of|Philippines|Singapore 1
China|Korea, Republic of|Russian Federation 1
China|Korea, Republic of|Singapore 1
China|Korea, Republic of|Taiwan 1
China|Netherlands 1
China|Netherlands|Poland|Romania|Turkey 1
China|United Kingdom 1
Colombia 1
Congo, The Democratic Republic of the 1
Czech Republic|France|Germany|Italy|Poland|Spain|Sweden|United Kingdom 1
Czech Republic|Korea, Republic of|Mexico 1
Czechia|Slovakia 1
Denmark|Ethiopia|Norway|Sweden 1
Denmark|United Kingdom|United States 1
Estonia|Latvia|Lithuania 1
Estonia|Russian Federation 1
Finland 1
Finland|Sweden 1
France|Denmark|United States|Australia|Austria|Belgium|Canada|Germany|New Zealand|Norway|Poland|Russian Federation|Spain 1
France|Georgia|Moldova, Republic of 1
France|Germany|Greece|Italy|Spain 1
France|Germany|Italy|Netherlands|Poland|Romania|Spain 1
France|Germany|Netherlands 1
France|Germany|United States|Belgium|Brazil|Canada|Greece|Italy|Portugal|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
France|Italy|Spain|United Kingdom 1
France|Italy|Switzerland 1
France|Moldova, Republic of|Romania 1
France|Moldova, Republic of|Romania|Russian Federation 1
France|Netherlands|Poland 1
France|New Zealand|Poland 1
France|Spain 1
France|Sweden|United Kingdom 1
France|United States|Belgium|Brazil|Canada|Denmark|Germany|Hungary|Netherlands|Poland|Puerto Rico|Romania|Russian Federation|Sweden|United Kingdom 1
Georgia 1
Germany|Greece|Romania 1
Germany|Hong Kong|India|Israel|Italy|China|Czech Republic|France|United States|Australia|Canada|Korea, Republic of|New Zealand|Poland|Puerto Rico|Singapore|Spain|Taiwan|Thailand|Turkey|United Kingdom 1
Germany|Hong Kong|Korea, Republic of|New Zealand|Singapore|United Kingdom 1
Germany|Israel|Mexico|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|France|Netherlands|New Zealand|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Spain|Ukraine|United Kingdom 1
Germany|Netherlands 1
Germany|Poland|Spain 1
Germany|Poland|Sweden|United Kingdom 1
Germany|Russian Federation 1
Germany|United Kingdom 1
Germany|United States|Argentina|Belgium|Chile|Egypt|Estonia|France|Greece|Italy|Kuwait|Latvia|Lebanon|Lithuania|Macedonia, The Former Yugoslav Republic of|Mexico|Oman|Pakistan|Peru|Portugal|Qatar|Romania|Serbia|Slovakia|Sweden|Switzerland|Syrian Arab Republic|Taiwan|Turkey|United Arab Emirates|Venezuela 1
Germany|United States|Australia|Austria|Canada|France|Italy|Puerto Rico|Spain|United Kingdom 1
Germany|United States|Belgium|Canada|France|Hong Kong|Italy|Puerto Rico|United Kingdom 1
Greece|Austria|Bulgaria|Germany|Italy|Russian Federation|Spain|Turkey 1
Guadeloupe 1
Hong Kong|Korea, Republic of|Malaysia|New Zealand|Singapore|Taiwan 1
Hong Kong|Korea, Republic of|Singapore|Taiwan|Vietnam 1
Hong Kong|New Zealand|Singapore 1
Hong Kong|Singapore|Taiwan|Thailand 1
Indonesia|Malaysia|Thailand|Vietnam 1
Israel|New Zealand|Pakistan 1
Israel|United States|Argentina|Australia|Belgium|Brazil|Canada|France|Germany|India|Korea, Republic of|Malaysia|Mexico|Poland|Puerto Rico|Singapore|Spain|Sweden|Taiwan|Thailand|United Kingdom 1
Korea, Republic of|Moldova, Republic of|New Zealand|Thailand|Ukraine 1
Korea, Republic of|Russian Federation|Taiwan 1
Korea, Republic of|Taiwan 1
Korea, Republic of|Taiwan|Thailand 1
Korea, Republic of|United Kingdom 1
Lao People’s Democratic Republic|Thailand 1
Lebanon 1
Mauritius|Moldova, Republic of|New Zealand|United Kingdom 1
Mauritius|United Kingdom 1
Mexico|Peru 1
Morocco 1
Myanmar 1
Nepal 1
Panama 1
Peru 1
Puerto Rico|Spain|Sweden|Poland|United States|Australia|Austria|Belgium|Brazil|Canada|France|Germany|Israel|Netherlands|Switzerland|United Kingdom 1
Romania 1
Russian Federation|Sweden 1
Russian Federation|United States|Argentina|Australia|Belgium|Chile|Finland|France|Greece|Hong Kong|Italy|Japan|Korea, Republic of|Mexico|Netherlands|New Zealand|Singapore|Taiwan|United Kingdom 1
Slovakia 1
Spain|Australia|Canada|Czechia|Finland|Italy 1
Spain|Sweden|Switzerland|Romania|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Czech Republic|Denmark|France|Germany|Greece|Hungary|Israel|Norway|Poland|Portugal|Puerto Rico|United Kingdom 1
Spain|Switzerland|United Kingdom 1
Spain|United States|Australia|Belgium|Brazil|Canada|Czech Republic|France|Germany|Hong Kong|India|Israel|Italy|Korea, Republic of|Netherlands|Pakistan|Poland|Puerto Rico|Romania|Russian Federation|Slovakia|Taiwan|Thailand|Ukraine|United Kingdom 1
Taiwan|United States|Brazil|Canada|France|Greece|Hong Kong|India|Indonesia|Philippines|Poland|Russian Federation|Singapore|South Africa|Thailand|Turkey|United Kingdom 1
Thailand|Australia|Brazil|China|Hong Kong|Korea, Republic of|New Zealand|Russian Federation|Singapore|Taiwan 1
Thailand|Australia|Hong Kong|Korea, Republic of|New Zealand 1
Turkey|United States|Austria|Bulgaria|Canada|Czech Republic|Germany|Greece|Hungary|New Zealand|Poland|Romania|Serbia|Spain 1
Uganda 1
Ukraine 1
United Kingdom|United States|Australia|Bulgaria|Canada|Czech Republic|France|Germany|Greece|Italy|Netherlands|New Zealand|Poland|Spain|Turkey 1
United States|Argentina 1
United States|Argentina|Australia|Austria|Brazil|Canada|Denmark|France|Germany|Israel|Italy|Poland|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Canada|Czech Republic|France|Germany|Korea, Republic of|Netherlands|Portugal|Romania|Spain|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Canada|Denmark|France|Germany|Greece|Ireland|Italy|Korea, Republic of|Mexico|New Zealand|Poland|Spain|Sweden|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Canada|France|Germany|Israel|Italy|Poland|Puerto Rico|Spain|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|France|Germany|Italy|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|France|Germany|Hong Kong|Hungary|India|Italy|Korea, Republic of|Mexico|Poland|Romania|Russian Federation|Spain|Taiwan|Thailand|Turkey|United Kingdom|Vietnam 1
United States|Argentina|Australia|Brazil|Canada|France|India|Italy|Mexico|Poland|Russian Federation|South Africa|Turkey 1
United States|Argentina|Australia|Brazil|France|Italy|Korea, Republic of|Spain|Taiwan 1
United States|Argentina|Australia|Canada|Denmark|France|Germany|Italy|Mexico|Puerto Rico|Sweden 1
United States|Argentina|Australia|Canada|France|Israel|Italy|Poland|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Argentina|Austria|Belgium|Brazil|Bulgaria|France|Germany|Netherlands|Poland|Portugal|Puerto Rico|Slovakia|Spain|Turkey 1
United States|Argentina|Belgium|Brazil|Canada|Korea, Republic of|Taiwan|United Kingdom 1
United States|Argentina|Belgium|Canada|Germany|Greece|India|Israel|Korea, Republic of|Poland|Romania|Russian Federation|Taiwan|United Kingdom 1
United States|Argentina|Canada|Denmark|France|Germany|Italy|Korea, Republic of|Mexico|Netherlands|Russian Federation|Spain|Sweden|Switzerland|Taiwan 1
United States|Argentina|Canada|Puerto Rico 1
United States|Argentina|France|Germany|Hungary|Spain 1
United States|Argentina|France|Germany|Ireland|Italy|Spain|United Kingdom 1
United States|Argentina|France|Germany|Israel|Italy|Japan|Korea, Republic of|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|Germany|Mexico|Puerto Rico|Switzerland 1
United States|Australia|Austria|Belgium|Brazil|France|Germany|Ireland|Mexico|Poland|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Israel|New Zealand|Norway|Poland|Portugal|Russian Federation|United Kingdom 1
United States|Australia|Austria|Brazil|Canada|France|Germany|Italy|Mexico|Poland|Puerto Rico|Spain|United Kingdom 1
United States|Australia|Austria|Canada|Czech Republic|France|Germany|India|Israel|Italy|Poland|Puerto Rico|Romania|Spain|United Kingdom 1
United States|Australia|Austria|Canada|France|Germany|Italy 1
United States|Australia|Austria|Canada|France|Germany|Italy|Puerto Rico|Spain 1
United States|Australia|Belgium|Brazil|Canada|Czech Republic|Egypt|France|Germany|Greece|India|Israel|Italy|Korea, Republic of|Pakistan|Poland|Puerto Rico|Romania|Russian Federation|Slovakia|Spain|Taiwan|Ukraine 1
United States|Australia|Belgium|Brazil|Canada|France|Germany|Israel|Netherlands|Poland|Puerto Rico|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Belgium|Bulgaria|China|Germany|Israel|Italy|Poland|Russian Federation|Ukraine|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Greece|Italy|New Zealand|Portugal|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|India|Italy|Korea, Republic of|Poland|Puerto Rico|Taiwan|Thailand|United Kingdom 1
United States|Australia|Belgium|Canada|France|New Zealand|Singapore|South Africa|Vietnam 1
United States|Australia|Belgium|Canada|Germany|New Zealand|Puerto Rico|United Kingdom 1
United States|Australia|Belgium|France|Germany|Hungary|Italy|Poland|Puerto Rico|Romania|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Belgium|Germany|Italy|Malaysia|Romania|Russian Federation|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Australia|Belgium|Germany|Puerto Rico|Spain|Taiwan 1
United States|Australia|Brazil|Canada|China|Germany|Korea, Republic of|New Zealand|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Brazil|Canada|Greece|Hong Kong|India|Indonesia|Italy|Korea, Republic of|Malaysia|Philippines|Poland|Russian Federation|Singapore|Taiwan|Thailand|Turkey 1
United States|Australia|Brazil|China|France|Germany|Hong Kong|Korea, Republic of|New Zealand|Russian Federation|Singapore|Taiwan|Thailand 1
United States|Australia|Brazil|France|Greece|Italy|Poland|Puerto Rico|Spain|Taiwan|United Kingdom 1
United States|Australia|Bulgaria|Canada|Czech Republic|France|Germany|Greece|Italy|Netherlands|New Zealand|Poland|Spain|Turkey|United Kingdom 1
United States|Australia|Bulgaria|Canada|France|Hong Kong|India|Italy|Japan|Korea, Republic of|New Zealand|Poland|Romania|Russian Federation|Singapore|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Canada|China|France|Germany|India|Israel|Korea, Republic of|Latvia|Malaysia|New Zealand|Poland|Russian Federation|Singapore|Spain|Taiwan|Thailand|Turkey|United Kingdom|Vietnam 1
United States|Australia|Canada|China|France|Israel|New Zealand|Singapore|Taiwan|Thailand|United Kingdom 1
United States|Australia|Canada|China|France|Korea, Republic of|Singapore|Taiwan|Thailand 1
United States|Australia|Canada|Czechia|Germany|Israel|Korea, Republic of|Malaysia|New Zealand|Puerto Rico|Romania|Russian Federation|Singapore|Taiwan 1
United States|Australia|Canada|Denmark|Egypt|France|Germany|Italy|Mexico|Puerto Rico|Sweden 1
United States|Australia|Canada|Denmark|France|Italy 1
United States|Australia|Canada|France 1
United States|Australia|Canada|France|Germany|Greece|Hong Kong|India|Italy|Korea, Republic of|Netherlands|Poland|Portugal|Romania|Singapore|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Canada|France|Germany|Greece|Italy|Pakistan|Spain 1
United States|Australia|Canada|France|Germany|Hong Kong|Italy|Korea, Republic of|Netherlands|Singapore|Taiwan 1
United States|Australia|Canada|France|Germany|Hong Kong|New Zealand|Poland|Singapore|Taiwan|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|New Zealand|Puerto Rico|Spain 1
United States|Australia|Canada|France|Germany|Italy|New Zealand|Puerto Rico|United Kingdom 1
United States|Australia|Canada|France|Germany|New Zealand|Puerto Rico|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|New Zealand|Switzerland|United Kingdom 1
United States|Australia|Canada|France|Hong Kong|India|Italy|Japan|Korea, Republic of|New Zealand|Poland|Romania|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Canada|France|New Zealand|Poland|Slovakia 1
United States|Australia|Canada|France|Puerto Rico 1
United States|Australia|Canada|Germany|Mexico|New Zealand|Puerto Rico|Romania|Russian Federation|Spain|Ukraine|United Kingdom 1
United States|Australia|Canada|Germany|Netherlands|New Zealand|Switzerland|United Kingdom 1
United States|Australia|Canada|New Zealand 1
United States|Australia|Canada|New Zealand|Puerto Rico 1
United States|Australia|Canada|New Zealand|United Kingdom 1
United States|Australia|China|Hong Kong|Korea, Republic of|New Zealand|United Kingdom 1
United States|Australia|France|Germany|Italy|Japan|New Zealand|Puerto Rico|Spain 1
United States|Australia|Germany|New Zealand|Poland 1
United States|Australia|Hong Kong|New Zealand|Philippines|Singapore|Taiwan|Thailand 1
United States|Australia|New Zealand 1
United States|Australia|New Zealand|Puerto Rico 1
United States|Australia|Puerto Rico 1
United States|Australia|Spain|United Kingdom 1
United States|Austria|Belgium|Brazil|Canada|Czechia|France|Germany|Israel|Italy|Poland|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Austria|Belgium|Canada|Czech Republic|France|Germany|Italy|Poland|Spain|United Kingdom 1
United States|Austria|Belgium|Canada|France|Germany|Japan|Korea, Republic of|Portugal|Romania|Russian Federation|Spain|Switzerland|Taiwan|United Kingdom 1
United States|Austria|Belgium|Canada|France|Germany|Japan|Portugal|Puerto Rico|Spain|Switzerland|United Kingdom 1
United States|Austria|Belgium|Canada|France|Switzerland|United Kingdom 1
United States|Austria|Belgium|France|Germany|Netherlands|Poland|United Kingdom 1
United States|Austria|Brazil|Canada|France|Germany|Italy|Mexico|Puerto Rico|Spain|United Kingdom 1
United States|Austria|Canada|France|Germany|Netherlands|Puerto Rico|United Kingdom 1
United States|Austria|Canada|France|Germany|Romania 1
United States|Austria|Canada|France|Germany|Spain 1
United States|Belgium 1
United States|Belgium|Brazil|Canada|China|Czechia|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Malaysia|Poland|Russian Federation|Spain|Thailand|Turkey|United Kingdom 1
United States|Belgium|Brazil|Canada|Colombia|France|Germany|Italy|Korea, Republic of|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Belgium|Bulgaria|Canada|France|Germany|Greece|Israel|Italy|Moldova, Republic of|Mongolia|New Zealand|Pakistan|Romania|Spain|Sweden|Switzerland|Taiwan|Turkey|United Kingdom 1
United States|Belgium|Bulgaria|France|Germany|Puerto Rico 1
United States|Belgium|Canada|China|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Malaysia|Poland|Russian Federation|Spain|Taiwan|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Belgium|Canada|China|France|Germany|Italy|Puerto Rico|United Kingdom 1
United States|Belgium|Canada|Czechia|Denmark|Germany|Japan|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
United States|Belgium|Canada|Finland 1
United States|Belgium|Canada|France|Germany|Hungary|Korea, Republic of|Puerto Rico|Spain 1
United States|Belgium|Canada|France|Germany|Poland|Russian Federation 1
United States|Belgium|Canada|Germany|Japan|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Belgium|Canada|Germany|United Kingdom 1
United States|Belgium|Canada|Hong Kong|India|Korea, Republic of|New Zealand|Romania|Russian Federation|Taiwan 1
United States|Belgium|Germany|Italy|Taiwan 1
United States|Belgium|Germany|Puerto Rico|Spain 1
United States|Belgium|Netherlands|Puerto Rico 1
United States|Brazil|France|Germany|Italy|Spain|Switzerland|United Kingdom 1
United States|Brazil|France|New Zealand|Sweden 1
United States|Brazil|Mexico|Puerto Rico|South Africa 1
United States|Brazil|South Africa 1
United States|Bulgaria|Canada|Czechia|France|Greece|Hungary|Ireland|Israel|Italy|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Spain|Taiwan|United Kingdom|Vietnam 1
United States|Bulgaria|Canada|France|Germany|Poland|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Bulgaria|France|Poland|Romania|Spain|Turkey 1
United States|Canada|China|France 1
United States|Canada|France|Germany|Greece|Italy|Poland|Singapore|Spain|Taiwan|Turkey 1
United States|Canada|France|Germany|Italy|Puerto Rico|Spain 1
United States|Canada|France|Germany|Italy|Spain|United Kingdom 1
United States|Canada|France|Germany|Portugal|Puerto Rico|Spain|United Kingdom 1
United States|Canada|Germany 1
United States|Canada|Germany|Greece|Italy|Korea, Republic of|Poland|Puerto Rico|Spain|Sweden 1
United States|Canada|Germany|Netherlands|Puerto Rico 1
United States|Canada|Germany|Poland|United Kingdom 1
United States|Canada|Hong Kong|Indonesia|Philippines|Singapore|Taiwan|Thailand 1
United States|Canada|Hong Kong|Italy|Korea, Republic of|Spain|Taiwan|United Kingdom 1
United States|Canada|Italy|Korea, Republic of|Netherlands|New Zealand 1
United States|Canada|Italy|Korea, Republic of|New Zealand|Romania 1
United States|Canada|Korea, Republic of|Puerto Rico|Taiwan 1
United States|Canada|New Zealand 1
United States|Canada|New Zealand|Puerto Rico 1
United States|Canada|United Kingdom 1
United States|China|Korea, Republic of|Singapore|Taiwan 1
United States|Czechia|France|Germany|Hungary|Poland|Puerto Rico|Spain|United Kingdom 1
United States|France|Germany|Italy|Puerto Rico|Spain|United Kingdom 1
United States|France|Germany|New Zealand 1
United States|France|Germany|New Zealand|Spain 1
United States|France|Germany|Puerto Rico|United Kingdom 1
United States|France|Greece|Italy|Puerto Rico|Spain|United Kingdom 1
United States|Germany|Italy|Russian Federation|Sweden 1
United States|Germany|Netherlands|Poland|Puerto Rico|Slovakia 1
United States|Germany|Spain|United Kingdom 1
United States|India|Korea, Republic of|Romania|Taiwan 1
United States|Japan|Korea, Republic of|Taiwan 1
United States|Korea, Republic of|Spain|Thailand|Turkey|United Kingdom 1
United States|New Zealand|Spain 1
United States|Russian Federation 1
United States|United Kingdom 1
Zambia 1

Sites per Study

Site_count Study_Count
1 947
2 110
3 68
4 62
5 36
6 32
7 33
8 33
9 19
10 24
11 28
12 18
13 9
14 15
15 20
16 16
17 10
18 17
19 16
20 14
21 16
22 9
23 10
24 13
25 15
26 7
27 6
28 11
29 3
30 3
31 5
32 10
33 3
34 4
35 5
36 2
37 5
38 8
39 6
40 4
41 4
42 6
43 6
44 3
45 4
46 1
48 7
49 4
50 1
51 4
52 2
53 4
54 1
55 3
56 1
60 1
61 2
62 2
63 3
64 1
66 3
67 4
68 2
71 3
72 1
73 3
74 1
75 1
76 2
77 1
78 1
79 1
80 2
81 1
82 1
86 2
87 3
88 1
91 1
93 3
97 1
98 1
100 3
101 1
102 1
104 2
105 1
106 1
107 1
109 1
112 1
113 1
114 1
116 3
119 1
121 1
123 1
124 1
132 1
142 1
144 1
147 1
159 2
165 1
171 1
184 1
187 1
191 1
210 1
227 1

Phase

Phase Study_Count
Phase 3 445
Phase 2 425
Phase 4 373
N/A 229
Phase 1 222
Phase 1/Phase 2 62
Phase 2/Phase 3 44
Early Phase 1 5

Number of Arms

Number_of_Arms Count_of_Studies
1 401
2 648
3 248
4 145
5 48
6 54
7 22
8 17
9 7
10 10
11 4
12 6
13 1
14 3
18 2
20 1
22 3
27 1
NA 184

Number of Updates

Count of Versions Count of Studies
1 147
2 197
3 143
4 146
5 133
6 124
7 91
8 89
9 77
10 71
11 46
12 37
13 42
14 31
15 27
16 14
17 15
18 25
19 13
20 16
21 19
22 15
23 8
24 11
25 8
26 19
27 13
28 12
29 9
30 5
31 9
32 8
33 6
34 7
35 11
36 5
37 9
38 4
39 3
40 6
41 2
42 9
43 3
44 5
45 3
46 4
47 3
48 5
49 4
50 2
51 3
52 2
53 3
54 2
55 2
57 2
58 2
59 3
60 1
61 2
62 3
63 1
64 4
65 1
66 3
68 1
69 1
71 1
72 1
73 1
74 2
75 1
76 3
77 1
78 1
80 2
81 1
82 1
83 1
84 1
85 7
87 2
88 1
89 2
90 2
91 4
92 2
93 1
94 1
97 1
99 1
101 1
103 3
110 1
117 1
121 1
125 1
134 2
150 2
161 1
173 1
254 1
589 1
904 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 23913 1658 14.422799
Contacts/Locations 8537 1443 5.916147
Recruitment Status 3178 1478 2.150203
Study Design 2651 1339 1.979836
Outcome Measures 2253 1013 2.224087
Arms 1892 961 1.968783
Interventions 1892 961 1.968783
None (earliest Version on record) 1805 1805 1.000000
Study Description 1778 825 2.155152
Study Identification 1632 855 1.908772
Eligibility 1628 858 1.897436
Sponsor/Collaborators 1503 834 1.802158
More Information 1199 417 2.875300
Oversight 881 682 1.291789
References 797 517 1.541586
Conditions 642 408 1.573529
Results 562 562 1.000000
IPDSharing 352 279 1.261649
Baseline Characteristics 321 239 1.343096
Reported Adverse Events 279 214 1.303738
Participant Flow 239 199 1.201005
Results Submission Events 98 98 1.000000
Documents 82 77 1.064935
2020Recruitment Status 1 1 1.000000
Quality Control Review has not concludedReturned: January 31 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 22.0 2.000 4.00000 6.00000 2.0000 10.0000 6.0000 5.000
1st Qu. 25.0 51.500 21.00000 24.00000 36.0000 71.0000 103.7500 54.750
Median 26.0 138.000 34.00000 38.50000 72.5000 121.0000 218.0000 131.500
Mean 35.4 1132.634 44.55856 56.98333 131.9143 273.3953 379.4908 1418.027
3rd Qu. 52.0 300.000 58.00000 64.25000 160.0000 345.0000 470.5000 303.750
Max. 52.0 50000.000 240.00000 548.00000 2000.0000 1400.0000 5000.0000 221855.000

Trial Group Type

group_type Group_Count
Experimental 3084
Active Comparator 759
Placebo Comparator 262
NA 184
Other 147
No Intervention 101
Sham Comparator 5

Intervention Model

intervention_model Study_Count
Parallel Assignment 1170
Single Group Assignment 520
Crossover Assignment 45
NA 34
Sequential Assignment 22
Factorial Assignment 14

Primary Purpose

primary_purpose Study_Count
Treatment 1326
Prevention 295
Diagnostic 36
NA 32
Basic Science 31
Other 30
Health Services Research 25
Screening 19
Supportive Care 10
Device Feasibility 1

Observational Studies

Studies by Country

Country Study_Count
United States 92
NA 72
China 45
France 23
Taiwan 16
Korea, Republic of 15
Spain 13
Germany 12
Australia 11
Japan 11
Netherlands 10
Canada 9
Egypt 9
Brazil 8
Hong Kong 7
India 7
United Kingdom 7
Denmark 6
Italy 5
United States|Puerto Rico 5
Austria 4
Mexico 4
Russian Federation 4
Switzerland 4
United States|Canada 4
Zambia 4
Israel 3
Turkey 3
Belgium 2
Bulgaria 2
Greece 2
Panama 2
Poland 2
Senegal 2
Singapore 2
Thailand 2
Australia|France|Hong Kong|Italy|Korea, Republic of|New Zealand|Russian Federation|Singapore|Taiwan|Thailand 1
Austria|Bahrain|Bangladesh|Bosnia and Herzegovina|Bulgaria|China|Egypt|France|Germany|Hong Kong|India|Indonesia|Ireland|Jordan|Korea, Republic of|Lebanon|Macedonia, The Former Yugoslav Republic of|Morocco|New Zealand|Pakistan|Poland|Portugal|Romania|Saudi Arabia|Thailand|United Arab Emirates|United Kingdom 1
Austria|Belgium|France|Greece|Israel|Italy|Poland|Portugal|Switzerland 1
Austria|Brazil|Canada|Croatia|France|Hungary|Macedonia, The Former Yugoslav Republic of|Mexico|Morocco|Poland|Romania|Serbia|Slovenia|Sweden 1
Austria|Bulgaria|China|France|Germany|Greece|Italy|Korea, Republic of|New Zealand|Poland|Portugal|Romania|Taiwan|Thailand|United Kingdom 1
Belgium|Egypt|Estonia|France|Germany|Greece|Hungary|Ireland|Italy|Kuwait|Lebanon|Macedonia, The Former Yugoslav Republic of|Morocco|Oman|Pakistan|Portugal|Qatar|Romania|Saudi Arabia|Serbia|Sweden|Switzerland|Syrian Arab Republic|Taiwan|Turkey|United Arab Emirates|United Kingdom 1
Belgium|France|Germany|Netherlands|Switzerland|United Kingdom 1
Belgium|Georgia|Nigeria 1
Belgium|Ireland|Italy|United Kingdom 1
Cambodia 1
Cambodia|Georgia 1
China|Japan 1
China|Korea, Republic of|Malaysia|Singapore 1
China|United States|Argentina|Brazil|Canada|Colombia|Czechia|France|Germany|Greece|India|Italy|Korea, Republic of|Mexico|Philippines|Poland|Portugal|Romania|Russian Federation|Singapore|Spain|Taiwan|Thailand|Turkey 1
Colombia 1
Czech Republic 1
Ethiopia 1
France|Italy 1
Gambia|Senegal 1
Georgia 1
Hungary 1
Iceland 1
Kenya 1
Korea, Republic of|Russian Federation 1
Kuwait|Lebanon|Albania|Algeria|Bahrain|Belgium|Bosnia and Herzegovina|Brazil|Egypt|Greece|Hungary|India|Iran, Islamic Republic of|Italy|Korea, Republic of|Macedonia, The Former Yugoslav Republic of|Morocco|Pakistan|Poland|Portugal|Qatar|Romania|Serbia|Slovakia|United Arab Emirates 1
Moldova, Republic of 1
Myanmar 1
Netherlands|United Kingdom 1
Norway 1
Puerto Rico 1
Romania|United States|Argentina|Australia|Austria|Belgium|Canada|Finland|France|Germany|Greece|Italy|Korea, Republic of|Mexico|Netherlands|New Zealand|Poland|Puerto Rico|Spain 1
Romania|United States|Argentina|Brazil|China|France|Greece|India|Italy|Peru|Philippines|Poland|Russian Federation|Singapore|Spain|Taiwan|Thailand|United Kingdom 1
Serbia 1
Slovenia 1
South Africa 1
Sweden 1
Uganda 1
Ukraine 1
United States|Argentina|Australia|Brazil|Canada|Denmark|France|Germany|Ireland|Italy|Japan|Korea, Republic of|Mexico|Poland|Puerto Rico|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Estonia|France|Germany|Italy|Netherlands|New Zealand|Poland|Puerto Rico|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Canada|Czechia|Estonia|France|Germany|Italy|Netherlands|New Zealand|Poland|Puerto Rico|Spain|Sweden|United Kingdom 1
United States|Australia|Bulgaria|Canada|Germany|Hungary|Italy|New Zealand|Romania|Turkey 1
United States|Canada|Germany|Puerto Rico 1
United States|Egypt 1
Uzbekistan 1
Vietnam 1

Sites per Study

Site_count Study_Count
1 332
2 24
3 12
4 13
5 4
6 6
7 5
8 4
9 6
10 3
11 5
12 2
14 1
16 1
17 2
18 2
19 2
21 2
22 1
25 1
26 2
27 3
28 1
30 1
33 1
34 1
37 2
39 1
43 1
45 2
46 1
50 1
53 1
57 1
58 1
59 1
61 1
66 1
70 1
72 1
74 1
75 1
84 1
86 1
88 1
90 1
101 1
104 1
106 1
125 1
156 1
161 1
170 1
249 1
261 1
266 1
272 1
290 1
323 1
325 1
388 1
402 1

Number of Updates

Count of Versions Count of Studies
1 54
2 78
3 76
4 46
5 29
6 16
7 22
8 7
9 13
10 10
11 4
12 14
13 5
14 6
15 7
16 6
17 1
19 1
20 5
21 1
22 1
23 3
24 4
25 2
26 1
27 1
28 2
29 1
30 2
31 1
33 3
34 2
36 1
37 1
38 2
39 3
40 1
42 2
43 1
44 2
45 1
49 1
53 2
56 1
58 2
60 3
63 1
64 1
66 1
67 2
69 1
70 2
73 1
74 1
78 1
81 1
83 1
88 1
89 1
90 1
91 1
103 1
108 1
115 1
119 1
126 1
127 1
128 1
139 1
211 1
440 1
461 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 6586 421 15.643705
Contacts/Locations 1642 319 5.147335
Study Description 705 178 3.960674
Study Design 698 321 2.174455
Recruitment Status 603 327 1.844037
None (earliest Version on record) 475 475 1.000000
Eligibility 383 204 1.877451
Sponsor/Collaborators 283 172 1.645349
Study Identification 244 163 1.496932
Outcome Measures 233 170 1.370588
Groups 184 139 1.323741
Interventions 184 139 1.323741
Oversight 160 116 1.379310
References 134 75 1.786667
More Information 130 38 3.421053
Conditions 102 74 1.378378
Results 75 75 1.000000
IPDSharing 47 47 1.000000
Baseline Characteristics 29 20 1.450000
Documents 19 19 1.000000
Reported Adverse Events 15 12 1.250000
Results Submission Events 14 14 1.000000
Participant Flow 11 9 1.222222

Enrollment Metrics

Measure Observational
Min 1.0000e+00
1st Qu 8.0250e+01
Median 2.9550e+02
Mean 2.1836e+05
3rd Qu 8.6950e+02
Max 1.0000e+08

Observation Model

observational_model Study_Count
Cohort 301
Case-Only 51
NA 48
Other 24
Case-Control 21
Case Control 18
Ecologic or Community 8
Family-Based 2
Case-Crossover 1
Defined Population, Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 324
Retrospective 69
Cross-Sectional 34
NA 25
Other 22
Longitudinal, Prospective 1

Registries

Studies by Country

Country Study_Count
China 8
NA 4
Spain 4
Korea, Republic of 3
United States 3
Egypt 2
France 2
Japan 2
Argentina 1
Argentina|Austria|Belarus|Belgium|Bosnia and Herzegovina|Croatia|Czechia|Denmark|Estonia|Finland|France|Georgia|Germany|Greece|Hungary|Iceland|Ireland|Israel|Italy|Latvia|Lithuania|Luxembourg|Netherlands|Norway|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|Slovenia|Spain|Sweden|Switzerland|Ukraine|United Kingdom 1
Austria 1
Austria|Belgium|Brazil|Georgia|Germany|Greece|Italy|Moldova, Republic of|Pakistan|Romania|Spain|Vietnam 1
Cameroon 1
Chile 1
Germany 1
Italy 1
Switzerland 1
Taiwan 1
United States|Australia|Belgium|Germany|Italy|New Zealand|Russian Federation|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|New Zealand|Puerto Rico|Spain|United Kingdom 1
United States|Canada 1
United States|Puerto Rico 1

Sites per Study

Site_count Study_Count
1 29
2 1
3 1
13 1
15 1
18 2
27 1
30 1
45 1
48 2
110 1
138 1

Number of Updates

Count of Versions Count of Studies
1 10
2 10
3 5
4 2
5 4
6 2
7 2
10 2
14 1
22 1
25 1
26 1
35 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 199 32 6.218750
Contacts/Locations 85 25 3.400000
None (earliest Version on record) 42 42 1.000000
Study Design 31 19 1.631579
Recruitment Status 29 20 1.450000
Sponsor/Collaborators 19 8 2.375000
Outcome Measures 16 13 1.230769
Study Description 16 12 1.333333
Eligibility 13 7 1.857143
Oversight 9 8 1.125000
Study Identification 9 6 1.500000
References 7 4 1.750000
Groups 5 5 1.000000
Interventions 5 5 1.000000
Conditions 3 3 1.000000
Documents 3 3 1.000000
IPDSharing 3 3 1.000000
Results 3 3 1.000000

Enrollment Metrics

Measure Registries
Min 8.000
1st Qu 281.250
Median 500.000
Mean 6212.548
3rd Qu 1000.000
Max 200000.000

Registry Model

observational_model Study_Count
Cohort 32
Case-Control 4
Case-Only 2
Other 2
Case-Crossover 1
NA 1

Time Perspective

time_perspective Study_Count
Prospective 32
Cross-Sectional 5
Other 3
NA 2

Follow-up

target_duration Study_Count
5 Years 8
1 Day 4
10 Years 4
1 Year 3
12 Months 3
24 Weeks 3
3 Years 2
48 Weeks 2
10 Months 1
144 Weeks 1
2 Weeks 1
2 Years 1
20 Years 1
3 Months 1
30 Years 1
36 Months 1
4 Years 1
6 Months 1
62 Months 1
64 Weeks 1
8 Months 1